Princess Josephine Friederike Luise of Baden was Princess of Hohenzollern-Sigmaringen from 27 August 1848 to 7 December 1849 during the brief reign of her husband, Prince Karl Anton. Josephine was the second daughter of Charles, Grand Duke of Baden, and Stéphanie de Beauharnais. She was the mother of the first king of Romania, Carol I. Through her younger daughter Marie, she is the ancestress of the Belgian royal family, the grand ducal family of Luxembourg as well as the last Queen of Italy and her descendants. Through her son, Leopold, she is also ancestress of the Romanian royal family.

Marie-José of Belgium was the last Queen of Italy. Her 34-day tenure as queen consort earned her the nickname "the May Queen".